I need a specific imaging type for my study. What does NACC's imaging database include?
Magnetic resonance imaging (MRI), along with volumetric summary measures, are available for a subset of participants in the Uniform Data Set. NACC's MRIs are most appropriately described as a convenience sample of images, voluntarily submitted by ADRCs. Imaging data collection and acquisition protocols vary by ADRC; thus, packages of MRI files at NACC may include T1-weighted, FLAIR, DTI, T2, or other MR series (and any combination thereof), and subjects may or may not have multiple scan sessions in the NACC database. Currently, we are unable to separate packages of MRI files into sequence types. For an estimate of the number of available scans that meet your image-type and subject criteria, use NACC's MRI Preview System.
Amyloid PET scans are also available for a small subset of participants.
Some examples of data that are not available include: function MRI (fMRI), Magnetic Resonance Spectroscopy (MRS), Arterial spin labeling (ASL), FDG-PET, and tau PET scans.